2D Codes
Distance
Horizo
ntal
FOV
in
0
2
4
6
8
10
12
14
16
18
20
22
24
0
2
4
-2
-4
6
-6
mm
Figure 114. 2D Codes
9.3 Reading Diagrams
• The following reading diagrams are references and are provided for typical performance at 25 °C using high quality
grade A symbols: Code 128 (1D code) and Data Matrix ECC 200 (2D code).
• Perform testing with the actual ABR using application codes to evaluate whether maximizing application
performance requires adjustments to the hardware/software configuration with respect to the Reference Conditions
given under each diagram.
• The ratio of the Vertical FOV width with respect to the Horizontal FOV width in the diagrams depends on the model.
For 7000 models, it is about equal to 0.8; specifically 1024/1280 (that is, FOV
V.
≈ FOV
H
× 0.8).
• The reading distance ranges are measured from the reading window surface.
• The maximum theoretical Line Speed values for each diagram can be calculated using the formula in
Maximum Line
Speed and Exposure Calculations
.
• Common software parameter settings:
◦
For all ABR 7000 6 mm models reading all code symbologies, and all 9 mm, 12 mm, and 16 mm models
reading 1D code symbologies are: Processing Mode = Advanced Code Setting
◦
For ABR 7000 9 mm, 12 mm, and 16 mm models reading 2D code symbologies: Processing Mode =
Standard; Code Contrast = Low; Decoding Complexity = Very High
• When defining a hardware/software configuration for the ABR for conditions different from those of the reference
diagrams, keep in mind the following rules:
◦
Changes in Exposure Time act directly proportional to the luminosity of the image and inversely proportional
to the maximum code reading movement speed. Consequently, reducing the Exposure Time by half,
reduces the luminosity of the image by half but doubles the theoretical code reading movement speed.
◦
Changes in Gain act directly proportional to the luminosity of the image. Increasing the Gain value however,
can reduce the quality of the acquired image.
◦
At the center of the field of view, the lighting power of the red illuminator is about 1.5 times that of the
Multicolored DPM illuminator.
◦
For the DPM illuminator, the overall lighting power being considered is all Sectors ON from the Internal LED
Group, unless specified otherwise.
ABR 7000 Series Barcode Reader
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